用所给单词的适当形式填空。
1. Miss Gao told us how to improve our _____ (speak).
2. Mr Smith is going to start _____ (teach) in China.
3. If you want _____ (study) English well, you should practice _____ (speak) it every day.
4. My job is _____ (make) the city much cleaner.
5. We _____ (make) our resolution yesterday.